http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1437
Summary: qemu-dm ignores vifname-Parameter
Product: Xen
Version: unspecified
Platform: x86-64
OS/Version: Linux-2.6
Status: NEW
Severity: enhancement
Priority: P2
Component: HVM
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: xen-bugs@xxxxxxxxxxxxx
Environment:
------------
Arch: x86_64
CPU: Intel 5130
OS: Debian GNU/Linux 5.0
Xen: Shipped Xen Version 3.2-1
Problem:
--------
For Management-Reasons i need unique Network-Interface Names that belongs easy
to the create VM.
By creating a Paravirtualized VM, the Parameter "vifname=" is used to set the
Interface Name.
By creating a Hardware Virtualized VM, the Parameter "vifname=" is not parsed
to the qemu-dm, so qemu-dm create a Network-Interface with a Name like "tapX"
which is very hard to allocate for me to the right HVM.
How to reproduce:
-----------------
Create a HVM-Configuration with vif = ['...vifname=...'] and start the HVM.
Call "ifconfig" and you will see a new Network-Interface which is not named
like that in "vifname".
In the qemu-dm-*.log is the Output of the Used Network-Interface Name.
How to solve:
-----------
Here is a Unified diff that solves the Problem, and names the qemu-dm
Network-Interface like the name in "vifname".
--- image.py 2009-03-25 12:24:10.000000000 +0100
+++ image.py.orig 2009-03-25 12:22:03.000000000 +0100
@@ -497,13 +497,17 @@
mac = devinfo.get('mac')
if mac is None:
raise VmError("MAC address not specified or generated.")
+ difname = devinfo.get('vifname')
bridge = devinfo.get('bridge', 'xenbr0')
model = devinfo.get('model', 'rtl8139')
ret.append("-net")
ret.append("nic,vlan=%d,macaddr=%s,model=%s" %
(nics, mac, model))
ret.append("-net")
- ret.append("tap,vlan=%d,bridge=%s" % (nics, bridge))
+ if difname is None:
+ ret.append("tap,vlan=%d,bridge=%s" % (nics, bridge))
+ else:
+ ret.append("tap,vlan=%d,ifname=%s,bridge=%s" % (nics, difname,
bridge))
return ret
Kind regards,
Dirk Willbrandt
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